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Finding the Fourth Proportional to 86,034.96, 118,729.80 and 48,310.56

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Solution

The fourth proportional to 86,034.96, 118,729.80 and 48,310.56 is: 66,669.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,034.96 : 118,729.80 = 48,310.56 : x
  2. Step 2: Convert to fraction form
    86,034.96/118,729.80 = 48,310.56/x
  3. Step 3: Cross multiply
    86,034.96x = 118,729.80 × 48,310.56
  4. Step 4: Simplify right side
    86,034.96x = 5,735,903,126.69
  5. Step 5: Solve for x
    x = 5,735,903,126.69/86,034.96
  6. Step 6: Final answer
    x = 66,669.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.